Pet bed



FIG. 1 is a top plan view of a pet bed showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a right side elevation view thereof, the left side being identical to the right side;

FIG. 4 is a front elevation view thereof, the rear being identical to the front; and,

FIG. 5 is an isometric view thereof.

The dashed lines in FIG. 2 depict stitching surrounding a buttonhole and form part of the claimed design. 

The ornamental design for a pet bed, as shown and described. 